atresia

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atresia

[ə′trē·zhə]
(medicine)
Imperforation or closure of a natural orifice or passage of the body.
References in periodicals archive ?
In order to test this hypothesis, BC and CC thresholds were measured for outpatients in our hospital with fibrotic aural atresia that had already been diagnosed using computed tomography (CT) scans.
Six patients with acquired aural atresia participated in the study.
In patients with aural atresia, the second genu and mastoid segment may be displaced anteriorly and laterally (Figure 7).
Branstetter, "Prospective blinded study of computed tomography in congenital aural atresia," International Journal of Pediatric Otorhinolaryngology, vol.
Computer-aided virtual surgery for congenital aural atresia. Otol Neurotol 2001;22:178-82.
(9) The primary factors in deciding whether to operate on congenital or acquired aural atresias are the severity of the heating impairment and the risk of cholesteatoma.